3m filters for face masks a1 a2 abek1 p2 p3 3m 2135 this 3m8482 particle filter p3 can be used on all 6000 7000 and 7500 series half masks and full face masks lightweight with low breathing resistance the filter is lighter than conventional filters that provide comparable protection contains advanced electret media for maximal filtration efficiency 3m 2135 particle filter p3 10 pairs